bizarre shoulder problem

Hello. My right shoulder has been feeling very weak and achey the past week. Its a mild pain/ache, but it's mild enough to keep me from working out. I don't remember doing anything that might have caused bursitis in my shoulder or have lead to it at least. How can I tell if it is bursitis or tendonitis? I began to feel it when I stopped a two month run of CJC1295+GHRP2. The day after I stopped that I started taking Prec...Peps.. Ostarine and now this. Is there a connection? What should I do from here? Does this mean I can't lift?